Shareholders' Equity

9 Months Ended

Sep. 30, 2019

Stockholders' Equity Note [Abstract]

SHAREHOLDERS’ EQUITY

A summary of shares repurchased under our stock repurchase program authorized by our Board of Directors follows:



	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Shares repurchased	—		—		1.3		2.1
Aggregate purchase price	$	—	$	—	$	44.7	$	100.0
Average purchase price per share	$	—	$	—	$	35.51	$	47.58

As of September 30, 2019, $219.0 million remained available for share repurchases under the program.

A summary of shares of common stock issued in connection with the exercise of stock options follows:



	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2019		2018		2019		2018
Shares issued	0.1		0.1		0.2		0.4
Proceeds from the exercise of stock options	$	4.9	$	1.8	$	8.0	$	16.0
Average exercise price per share	$	35.61	$	16.67	$	33.70	$	39.20

The following table presents a summary of shares of common stock issued in connection with the settlement of RSUs, as well as shares surrendered to AutoNation to satisfy tax withholding obligations in connection with the vesting of restricted stock and settlement of RSUs:



	Three Months Ended		Nine Months Ended
	September 30,		September 30,
(In actual number of shares)	2019	2018	2019	2018
Shares issued	2,045	—	306,346	122,661
Shares surrendered to AutoNation to satisfy tax withholding obligations	899	—	85,331	55,420